class Geese:
  '''大雁类'''
  def __init__(self, beak, wing, claw) -> None:
    print(self)
    print('我是大雁类')
    print(beak)
    print(wing)
    print('我是大雁类')

beak_1 = "喙的基部较高"
wing_1 = "翅膀长而尖"
claw_1 = "爪子是蹼状的"
wildGoose = Geese(beak_1,wing_1,claw_1);